For my first bit of fun with google maps, I decided to take the overworld map of The Legend of Zelda from http://mikesrpgcenter.com/zelda/maps.html, and make a google map. I need to add the level maps, and include some of the overlay information(Like, my route through the game). Unfortunately the overlay stuff broke after transitioning to v2 of the API. I'll add it back soon.
Because I generate the tiles on the fly, the map can be a little jerky, especially at close zoom levels. Instead of zooming, consider sitting closer to the screen.